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Question 1 of 10
1. Question
2 points
Consider the following statements.
Much of the Earth’s mantle consists of magma.
Magma is a mixture of minerals and also contains small amounts of dissolved gases.
The high pressure under Earth’s crust keep magma in a solid state.
Which of the above statements is/are correct?
Correct
Magma is extremely hot liquid and semi-liquid rock located under Earth’s surface. Earth has a layered structure that consists of the inner core, outer core, mantle, and crust. Much of the planet’s mantle consists of magma. This magma can push through holes or cracks in the crust, causing a volcanic eruption. When magma flows or erupts onto Earth’s surface, it is called lava.
Incorrect
Magma is extremely hot liquid and semi-liquid rock located under Earth’s surface. Earth has a layered structure that consists of the inner core, outer core, mantle, and crust. Much of the planet’s mantle consists of magma. This magma can push through holes or cracks in the crust, causing a volcanic eruption. When magma flows or erupts onto Earth’s surface, it is called lava.
Question 2 of 10
2. Question
2 points
The thinnest layer of our planet is
Correct
Solution: b)
Incorrect
Solution: b)
Question 3 of 10
3. Question
2 points
Consider the following statements.
About 98 per cent of the total crust of the earth is composed of titanium, hydrogen, phosphorous, manganese and sulphur.
All three rock types (igneous, sedimentary, and metamorphic) can be found in Earth’s crust.
The oldest rocks on our planet are part of the continental crust.
Which of the above statements is/are correct?
Correct
The most abundant elements in the Earth’s crust include (listed here by weight percent) oxygen, silicon, aluminum, iron, and calcium.
Incorrect
The most abundant elements in the Earth’s crust include (listed here by weight percent) oxygen, silicon, aluminum, iron, and calcium.
Question 4 of 10
4. Question
2 points
Which of the following sources of information are considered as the direct sources of information about the Earth’s interior?
Drilling projects in Mining areas
Volcanic eruption
Meteors that at times reach the earth
Gravitation
Select the correct answer code:
Correct
Solution: c)
Incorrect
Solution: c)
Question 5 of 10
5. Question
2 points
Consider the following statements.
Earth’s crust has a density higher than the mantle part of Earth.
The inner core of the Earth is in solid state.
Which of the above statements is/are incorrect?
Correct
The portion of the interior beyond the crust is called the mantle. It has a density higher than the crust’s (3.4 g/cm3).
The outer core of Earth is in liquid state while the inner core is in solid state. The core is made up of very heavy material mostly constituted by nickel and iron. It is sometimes referred to as the nife layer.
Incorrect
The portion of the interior beyond the crust is called the mantle. It has a density higher than the crust’s (3.4 g/cm3).
The outer core of Earth is in liquid state while the inner core is in solid state. The core is made up of very heavy material mostly constituted by nickel and iron. It is sometimes referred to as the nife layer.
Question 6 of 10
6. Question
2 points
Consider the following statements regarding Karst topography.
It is commonly associated with carbonate rocks.
Such topography occurs only in tropical and temperate environments.
Nearly a quarter of the world’s population depends upon water supplied from karst areas.
Which of the above statements is/are correct?
Correct
The term karst describes a distinctive topography that indicates dissolution (also called chemical solution) of underlying soluble rocks by surface water or ground water. Although commonly associated with carbonate rocks (limestone and dolomite) other highly soluble rocks such as evaporates (gypsum and rock salt) can be sculpted into karst terrain.
Incorrect
The term karst describes a distinctive topography that indicates dissolution (also called chemical solution) of underlying soluble rocks by surface water or ground water. Although commonly associated with carbonate rocks (limestone and dolomite) other highly soluble rocks such as evaporates (gypsum and rock salt) can be sculpted into karst terrain.
Question 7 of 10
7. Question
2 points
Consider the following statements regarding Badland Topography.
Presence of Hard archaic granite rock system.
Characterized by steep slopes and minimal vegetation.
The geologic forms of Canyons, ravines, gullies, buttes and mesas are common in badlands.
Which of the above statements is/are correct?
Correct
Badlands are a type of dry terrain where softer sedimentary rocks and clay-rich soils have been extensively eroded by wind and water. They are characterized by steep slopes, minimal vegetation, lack of a substantial regolith, and high drainage density. They can resemble malpaís, a terrain of volcanic rock. Canyons, ravines, gullies, buttes, mesas, hoodoos and other such geologic forms are common in badlands.
Incorrect
Badlands are a type of dry terrain where softer sedimentary rocks and clay-rich soils have been extensively eroded by wind and water. They are characterized by steep slopes, minimal vegetation, lack of a substantial regolith, and high drainage density. They can resemble malpaís, a terrain of volcanic rock. Canyons, ravines, gullies, buttes, mesas, hoodoos and other such geologic forms are common in badlands.
Question 8 of 10
8. Question
2 points
Consider the following statements.
Moraines are accumulations of dirt and rocks that have fallen onto the glacier surface or have been pushed along by the glacier as it moves.
Loess is a type of silt which forms fertile topsoil in some parts of the world.
Which of the above statements is/are correct?
Correct
Moraines are accumulations of dirt and rocks that have fallen onto the glacier surface or have been pushed along by the glacier as it moves. The dirt and rocks composing moraines can range in size from powdery silt to large rocks and boulders. A receding glacier can leave behind moraines that are visible long after the glacier retreats.
Incorrect
Moraines are accumulations of dirt and rocks that have fallen onto the glacier surface or have been pushed along by the glacier as it moves. The dirt and rocks composing moraines can range in size from powdery silt to large rocks and boulders. A receding glacier can leave behind moraines that are visible long after the glacier retreats.
Question 9 of 10
9. Question
2 points
Which of these geographical features is most likely to have the lowest mean elevation?
Correct
Solution: b)
Incorrect
Solution: b)
Question 10 of 10
10. Question
2 points
Lithospheric plates move around very slowly – just a few millimetres each year. This is because of
Correct
The lithosphere is broken into a number of plates known as the Lithospheric plates. You will be surprised to know that these plates move around very slowly – just a few millimetres each year. This is because of the movement of the molten magma inside the earth.
Incorrect
The lithosphere is broken into a number of plates known as the Lithospheric plates. You will be surprised to know that these plates move around very slowly – just a few millimetres each year. This is because of the movement of the molten magma inside the earth.
